KR20200087867A - Projection device for automobile headlamps - Google Patents

Abstract

The present invention relates to a projection device (1) for a vehicle headlamp, the projection device (1), in the form of at least one light distribution in the front area of the vehicle, at least one assigned to the projection device (1) It is configured to map the light of the light source 2, and the total number of low beam micro optics includes at least two groups of low beam micro optics.

Description

Projection device for automobile headlamps

The present invention relates to a projection device for an automobile headlamp, wherein the projection device is in the form of at least one light distribution in the front area of the vehicle, i.e. in the form of a low beam light distribution, the light of at least one light source assigned to the projection device. Is configured to map, the projection device

-An incident optical element comprising a total number of incident micro optical elements 3a, preferably arranged in an array,

-Preferably comprising an exiting optical element comprising a total number of exiting micro-optical elements 4a arranged in the array,

Each incident micro-optical element is assigned exactly one exit micro-optical element,

The incident micro-optical elements are formed in such a way that the total light emitted from substantially one incident micro-optical element is only incident into the assigned exiting micro-optical element, and/or the incident micro-optical elements and the exiting micro-optical elements are mutually Light relative to the liver, and the light pre-formed by the incident micro-optical elements is mapped by the exiting micro-optical elements as at least one light distribution to the front area of the vehicle,

Each incident micro-optical element focuses light passing through it to at least one incident micro-optical element focus, wherein the incident micro-optical element focus is located between the incident micro-optical element and the assigned exit micro-optical element, and the incident micro-optical element At least one diaphragm device is disposed between the element and the emitting micro-optical element,

A low beam micro-optical system is formed through at least one incident micro-optical element, an assigned exit micro-optical element and at least one aperture device positioned between these optical elements,

The at least one aperture device is configured to limit the distribution of light mapped through each exit micro-optical element in such a way that the light distribution emitted through the exit micro-optical element forms part of the low beam light distribution. For this purpose, it includes at least one optically effective aperture edge portion that maps the path of the light and dark boundary of the low beam light distribution.

The invention also relates to a micro-projection light module for an automotive headlamp, comprising at least one projection device according to the invention and at least one light source for inputting light into the projection device.

The invention also relates to a vehicle headlamp, in particular a motor vehicle headlamp, comprising at least one micro-projection light module according to the invention.

From the prior art, document AT 514967 B1 is disclosed, which discloses a projection device of the type mentioned in the introduction. Disclosed herein is a projection device comprising a plurality of incident micro-optical elements and an exit micro-optical element, wherein aperture devices are disposed between the incident micro-optical elements and the exit micro-optical elements. In order to avoid exceeding the legally preset maximum values of light intensity from the inside of the light distribution, the local intensity should be configured correspondingly low. In the case of macro-projection modules, for this purpose, for example, light-shielding elements are provided in the projection lens, whereby the illuminance at the corresponding points becomes lower. Conventional measures for dimming individual regions of the light distribution include manipulation of a projection lens or lighting device using a light blocking element. The disadvantage here is that the light-blocking element strongly dimmes the area to be shaded, and a uniformly uniform luminance transition towards non-dimmed areas cannot be realized by the light-blocking element. The region shaded from the light pattern could be clearly identified as a local minimum of the intensity of the light distribution with the conventional naked eye, thus adversely affecting the overall impression of the light distribution.

The problem of the present invention is to overcome the aforementioned disadvantages of the prior art.

The above object is that in the projection apparatus of the type mentioned in the introduction, the total number of low beam micro optics according to the invention comprises at least two groups of low beam micro optics, i.e.

-A first group of low beam micro optics, including at least one first variant of aperture devices,

-A second group of low beam micro optics including at least one second variant of aperture devices, wherein the configuration of the second variant of aperture devices comprises:

At least, the second variant of the aperture devices

* Light blocking elements 50L and/or projecting along a section of the shape of the aperture edge

* In that it comprises light-shielding elements (ASegm 10) spaced apart from the aperture edge portion and completely surrounded by the light-transmitting region of the aperture device,

It is solved by the projection device, which is different from the configuration of the first modification of the aperture devices.

By providing at least two variations of the aperture devices, the dimmed areas within the light distribution, by corresponding selection of aperture devices or the number and/or configuration of shading elements that can be provided in these aperture devices, The relevant legal settings can be accurately met on the one hand and at the same time a uniform transition within the light distribution can be provided, which can have a favorable effect on the low beam light distribution.

The optically effective aperture edge portion means an aperture edge portion intervening in the mapping of the light distribution to limit the light distribution.

In this case, the phrase "substantially ... total light emitted" is intended to irradiate at least the majority of the total light flux emitted from the incident micro-optical element into the only allocated micro-optical element. It means intended. It is intended, in particular, not to irradiate into any exiting micro-optical elements at any luminous velocity, in a type and manner in which undesirable optical effects such as scattered light, etc., which may result in glare, do not occur.

Also, the phrase "incident micro-optical elements are formed in a manner such as .. and/or the incident micro-optical elements and the exiting micro-optical elements are arranged relative to each other" is exclusively or preferably itself In addition to its practical function, it means that further measures can be provided, such as apertures (continued see below), which still retain the function of directing the entire light beam to the precisely assigned exit micro-optical element.

Through the use of a few, multiple to multiple assigned micro optics instead of a single optic as in conventional projection systems, the focal lengths of the micro optics as well as their dimensions are clearly smaller than in the case of the “conventional” optics. Equally, the center thickness can be reduced compared to conventional optical systems. In doing so, the mounting depth of the projection device can also be clearly reduced compared to conventional optical systems.

Through the increase in the number of micro-optical systems, on the one hand the light flux is increased or sized, and the upper limit with respect to the number of micro-optical systems is limited, in particular, through the available manufacturing methods respectively. For the creation of a low beam function, for example, 200 to 400 micro-optical systems may be sufficient or desirable, but this should not be an upper or lower limit value, but only a number of examples. To increase the luminous flux, it is desirable to increase the number of micro optical systems of the same type. Conversely, multiple micro optics can be used to include micro optics with different optical behavior within the projection system to create or overlap different light distributions. Thus, many micro-optical systems also allow for construction possibilities that were not available for conventional optical systems.

In addition, the optical module can be resized, that is, a plurality of optical modules having the same or similar structure can be assembled into a relatively larger whole system, for example, a vehicle headlamp.

For conventional projection systems, including one projection lens, the lens has a standard diameter between 60 mm and 90 mm. In the case of the module according to the invention, the individual micro-optical systems have a standard dimension of about 2 mm x 2 mm (V and H axis) and a depth of about 6 mm to 10 mm (Z axis, for example see Fig. 2), This results in a clearly thinner depth of the module according to the invention compared to conventional modules in the Z direction.

The optical module or projection device according to the present invention can have a small structural depth, and can be basically formed in a free form, that is to say separated from the second optical module for the second partial light distribution, for example It is possible to form a first optical module for the generation of the first partial light distribution in a fashioned manner, and to offset the optical modules relatively freely, ie in the vertical and/or horizontal direction, and/or offset from each other in depth. Can be placed, so that the design input is also relatively simple to realize.

Another advantage of the optical module to projection device according to the invention is that the precise positioning of the light source(s) relative to the projection device is omitted. Accurate positioning is less critical, provided that the spacing of the illumination units to the micro lens array does not need to be accurate. However, the inaccurate positioning of the actual light source(s) is not considered more important, since the entrance and exit micro-optical elements now form an almost one system and are already optimally matched to each other. Existing light sources are, for example, light-emitting diodes in which their light is directed in parallel by collimators such as a compound parabolic concentrator (CPC) or a total inner reflection (TIR lens). These are almost point-shaped light sources.

The projection apparatus or light module may also include additional micro-optical systems that are used to generate low beam light distributions and other types of light distributions. In this case, the “determined type” of the light distribution means the light distribution produced according to the standards, for example the UN/ECE regulations in European Union countries, in particular the standards of Regulations 123 and 48; Or light distribution in accordance with applicable standards in other countries or regions.

The term "roadway" is used only for the sake of simplicity below, because, as is obvious, whether the light pattern is actually located on the roadway, or whether it extends beyond it, depends on the conditions of the place. Because. For example, to test the emitted light distributions, in general, in accordance with the relevant standards, for example, regulations relating to automotive lighting technology, the European Commission's Regulations Nos. 123 and 48, "Adaptive Headlight Systems for Automobiles" "Consistent Conditions for Approval of (AFLS)" and "Consistent Conditions for Approval of Vehicles Regarding Attachment of Lighting and Optical Signal Devices"; Federal Motor Vehicle Safety Standard FMVSS No. 108, valid in the United States, as specified in Title 49 or below of the Federal Regulation Code (CFR) under the heading "Variation, Part 571-§571.108 in Federal Vehicle Standards in Subpart B"" Lamps, reflectors and related equipment"; And in accordance with the national standard GB/T 30036/2013 of the Republic of China (China) "Adaptive Headlight System for Automobiles"; creates a projection of a light pattern on a vertical surface.

Also, generally, the first group may include light blocking elements. The independent claims of the present invention do not mean that the first group should be free of light blocking elements, but that, for example, other types of light blocking elements are provided to include the aperture device of at least one second variant different from the first variant. Means Naturally, however, the first group may not have the same shading elements.

Particularly preferably, in the case of the above lighting device, two or more groups are provided for generating different light distributions, each group forming one different light distribution selected from among the following light distributions, for example.

*) cornering light distribution;

*) urban light distribution;

*) light distribution of country road light;

*) distribution of highway light;

*) Light distribution for additional light for highway light;

*) light distribution of bending light;

*) Low beam near field distribution;

*) light distribution for asymmetric low beam over long distances;

*) light distribution for asymmetric low beam over long distances in bending light mode;

*) High beam light distribution;

*) Anti-glare high beam light distribution.

Examples of the above light distributions can be deduced in particular from document AT 514967 B1.

Preferably, each low-beam micro-optical system comprising the aperture device of the second variant can include exactly one light-blocking element projecting along a section of the shape of the aperture edge. In this case, the light blocking element extends in the vertical direction, preferably in order to shield the point "50L" of the light distribution. Naturally, other shading elements that do not project from the aperture edge may also be provided. Corresponding dimming at the 50L point can be provided, for example, through the selection of a suitable number and dimension of low beam micro optics, including shading elements according to the second variant. In this case, the expression "protruding from the aperture edge portion" means that the aperture edge portion can still be identified anyway as itself as an aperture edge portion for low beam light distribution. Hence, it is inclined horizontally or obliquely. The longitudinal extension of the aperture edge portion, which consists of the straight aperture aperture portion sections, is interrupted through the protruding light blocking element. In other words, the aperture edge portion can no longer be identified in the region of the light blocking element which is completely light transmissive, The reason is that the aperture edge portion is no longer visible as an edge portion in the area based on the presence of the protruding light-shielding element The aperture edge portion is again (in an optically visible manner) at the front and rear of the light-shielding element. Continues

In a preferred manner, each low-beam micro-optical system comprising the aperture device of the second variant may include exactly one light-blocking element that is spaced from the aperture edge portion and is completely surrounded by the light-transmitting region of the aperture device. The shading elements can be arranged in a manner to achieve shading inside segment 10 of the low beam light distribution. Correspondingly homogeneous and uniform dimming inside segment 10 can be provided, for example, through selection of a suitable number and dimension of low beam micro optics including the light blocking elements.

In a preferred manner, the at least one aperture device can be connected to a light transmissive carrier coated with a light transmissive material that is at least partially light transmissive on its surface for the formation of a preset light distribution. A light transmissive layer that is at least partially light transmissive can be deposited, for example, by a lithographic method. Further, depending on the situation, an additional aperture device may be provided on the other side of the carrier, for example, to prevent scattered light.

For a particularly efficient and accurate presetting of the transition between the dimmed and non-dimmed areas, at least the individual light-shielding elements of the aperture device of the second variant can be partially light transmissive. Further, the light transmittance of the individual light blocking elements may be varied.

As an alternative, or supplement thereto, equally, at least the individual light-shielding elements of the aperture device of the second variant may be completely light transmissive. The overall shading configuration can be varied through a suitable selection of the number and configuration of shading elements.

In addition, individual light-blocking elements of the aperture device of the second variant can be provided for limiting the luminosity of the light distribution at a 50L measuring point. The 50L measuring point is, for example, located at an angle of 3.43° toward the left (L) and 0.86° toward the bottom (D). In the regulation FMVSS, the measuring point is 0.86D 3.5L without specific designation.

Preferably, the individual shading elements can be arranged in such a way as to shield the area of the light distribution emitted through each low beam micro-optical system, the area having a horizontal angle of up to 5° and a vertical angle of up to 5°. Includes. The shaded area may include horizontal and vertical angles of 1° or 2° to 5°, and may be formed in a circular shape, for example.

In addition, the size of at least one light blocking element of one stop device of the second modification may be different from the size of at least one light blocking element of another aperture device of the second modification. In this case, the expression "size" means the area where each light-shielding element extends over it. In this case, the shape can be scaled. In addition, alternatively, the shapes of the light blocking elements may be different from each other, that is, they may exhibit different geometrical appearances.

Further, individual light blocking elements of the aperture device of the second modification can be provided for limiting the light intensity of the light distribution within segment 10 of the low beam light distribution. The expression "segment 10" means a line at a height of -4° (-4D) between 4.5°L and 2R°.

Preferably, the individual shading elements can be arranged in such a way as to shade the area of the light distribution emitted through each low beam micro-optical system, the area having a horizontal angle of up to 10° and a vertical angle of up to 3°. Includes. Thereby, the width can be up to 10°, for example, and the height can be, for example, between 1° and 3°. Accordingly, the light blocking element can be formed as a floating bar, but the dimensions of the individual light blocking elements can be varied to create a uniform transition. In this regard, the production of the light-shielding elements using lithographic processes is particularly preferred.

In particular, the carrier of the at least one stop device may be made of glass. Further, not only the incident optical element but also the exit optical element can also be fixedly connected to at least one carrier of the aperture device, which is disposed between the incident optical element and the exit optical element. In that way, unintended effects—for example due to thermal expansion—can be minimized, and permanent and accurate positioning of the incident optical element relative to the exiting optical element or vice versa can be ensured. To this end, in a preferred manner, the at least one carrier and the stationary connections of the incident optical element and the exit optical element can each be formed as transparent adhesive joints.

Further, the total number of low-beam micro-optical systems may include a third group of low-beam micro-optical systems that include aperture devices of the third modification, wherein in the case of aperture devices of the third variant,

* At least one light-permeable window, which is at least partially light-transmissive, is formed inside the light-shielding area of the iris device formed up to the edge of the iris to form a light distribution located above the light-dark boundary. Accordingly, the area located above the contrast boundary is illuminated, for example, so that traffic signs can be identified more fully. This light function is usually referred to as "sign light", and the intensity of illumination in this area can be determined through the formation of a light transmissive window and through the number of low beam micro optics in the third variant. In other respects, a combination of the low-beam micro-optical systems of the first or second modification and the low-beam micro-optical systems of the third modification are also equally possible.

In general, all embodiments of the present invention can also be provided in connection with the generation of short-range light distributions.

Very generally, different low-beam micro-optical systems may include (eg at least two) differently formed aperture devices or (eg at least two) light-shielding elements of different sizes, and the metering area (shielded through the light-shielding elements) The photometric range) overlaps at least partially. This may correspond to the first, second and/or third modification to the light blocking elements of the group. In particular, the shaded metering area of the relatively smaller shading element can then be completely contained within the shaded metering area of the next larger shading element, or the shading elements can be formed in such a way that the effect occurs.

The invention also relates to at least one projection device according to the invention, and at least one light source for inputting light into the projection device, a micro projection light module for an automotive headlamp. Preferably, one LED light source is assigned to each low beam micro-optical system.

The invention also relates to a vehicle headlamp, in particular a motor vehicle headlamp, comprising at least one micro-projection light module according to the invention.

In addition, the invention relates to a vehicle equipped with at least one vehicle headlamp according to the invention, in particular an automobile.

The invention is explained in more detail in accordance with the non-limiting example embodiments shown in the drawings below.

1 is a diagram showing an example mapping of low beam light distribution according to the prior art.
2 is a schematic diagram of an exemplary projection device.
3A-3D are schematic diagrams showing a method for stacking an aperture device on a transparent carrier that can be connected to an incident micro-optical element and an exit micro-optical element.
4A is a diagram showing an example configuration of aperture devices positioned side by side in accordance with the prior art.
4B is a diagram showing the light distribution produced by the device according to FIG. 4A.
5A is a schematic diagram of a configuration according to the invention of aperture devices positioned side by side in accordance with the first and second variants.
5B is a view showing the light distribution generated by the projection device including the aperture devices according to FIG. 5A.
6A is another schematic diagram of a configuration according to the invention of an aperture device positioned next to each other according to the first and second variants.
FIG. 6B is a view showing the light distribution generated by the projection device including the aperture devices according to FIG. 6A.

In the following figures, the same reference numerals indicate the same features—unless otherwise specified.

In Fig. 1, an example mapping of a portion cut out from a low beam light distribution according to the prior art is shown. Luminance inside the light distribution is shown through contour lines that clarify areas of the same illuminance. In this figure, the illuminance has a maximum value immediately below the light and dark boundary, and decreases toward the outside. In this case, the path of the contrast border can be clearly identified. In the left region near the contrast boundary, downward bends can be identified, and inside the bends, contours are particularly densely located next to each other. 50L of the correspondingly dimmed position is located inside the area, but dimming within the light pattern is uneven and clearly confirmed accordingly, as can be confirmed based on strong gradients of illuminance in the area of 50L of the measurement point It is formed in a way that can be.

2, a schematic view of an exemplary projection device 1 in a micro-projection light module 6 is shown, which projection device 1-as discussed below-will be provided with aperture devices of the type according to the invention. Can. The projection device 1 according to the invention provided in this type is suitable for application in an automotive headlamp, but the projection device 1 is, in the front area of the vehicle, at least one light distribution, i.e. low beam light In the form of a distribution, at least one light source 2 assigned to the projection device 1 (but preferably each individually incident micro-optical element 3a) is an individually controllable light source, particularly more preferably one LED Is assigned). The light emitted through the light source 2 can be deflected onto the incident optical element 3, for example through a collimator 7. The projection device 1 comprises: an incident optical element 3 comprising a total number of incident micro optical elements 3a, which are preferably arranged in an array; An emitting optical element 4 comprising a total number of emitting micro optical elements 4a, preferably arranged in an array; Included, but exactly one exiting micro-optical element 4a is assigned to each incident micro-optical element 3a.

In this case, the incidence micro-optical elements 3a are formed in such a way that substantially the entire light emitted from one incident micro-optical element 3a is only incident into the assigned outgoing micro-optical element 4a, and/or The incident micro-optical elements 3a and the emitting micro-optical elements 4a are arranged relative to each other, and the light pre-formed by the incident micro-optical elements 3a is driven by the emitting micro-optical elements 4a. Is mapped as at least one light distribution to the front region of. Each incident micro-optical element 3a is formed in such a way that the incident micro-optical element 3a condenses light passing through it into at least one incident micro-optical element focus, wherein the incident micro-optical element focus is the incident micro Located between the optical element 3a and the assigned exit micro-optical element 4a, between the incident micro-optical element 3a and the exit micro-optical element 4a, at least one aperture device 8a (see Fig. 3) Is arranged, and a low beam micro-optical system is formed through at least the incident micro-optical element 3a, the assigned outgoing micro-optical element 4a and at least one aperture device 8a positioned between these optical elements, respectively.

At least one aperture device 8a, the light mapped through each exiting micro-optical element 4a, in such a way that the light distribution emitted through the exiting micro-optical element 4a forms part of the low beam light distribution. The aperture device 8a is configured to limit the distribution, for this purpose, for this purpose, at least one optically effective aperture edge portion K mapping the path of the light and dark boundary of the low beam light distribution (see FIGS. 4A, 5A and 6A). It includes.

The total number of low beam micro optics includes at least two groups of low beam micro optics, i.e.

-A first group of low beam micro-optical systems comprising at least one first variant of the iris devices 8a' (see Fig. 4A),

-A second group of low beam micro-optical systems including at least one second variant of the aperture devices 8a" (see Fig. 6A), wherein the configuration of the second variant of the aperture devices 8a" is at least,

A second variation of the iris devices 8a"

* Shading elements 50L projecting along a section of the shape of the aperture edge (see Fig. 5A. In other respects shading of segment A50L is also provided at least partially through floating shading-off elements) And/or

* Aperture device 8a' in that it comprises light blocking elements (ASegm 10) (see Fig. 6a) that are completely surrounded by the light transmissive region of aperture device 8a" spaced apart from aperture edge portion K ) Is different from the configuration of the first modification.

3(a) to 3(d), schematic diagrams of the individual steps of the method for manufacturing the projection device 1 according to the present invention for a car headlamp are respectively shown, wherein the projection device 1 is a vehicle It is configured to map the light of at least one light source 2 assigned to the projection device 1 in the form of at least one light distribution in the front region. In FIG. 3(a), in FIG. 3(b), a carrier 5 including a first flat surface 5a in which the first aperture device 8a is stacked, for example, through screen printing or metal deposition, is shown. (5) is at least partially composed of glass. In Fig. 3(c), the next step b) of the method herein, i.e. a small number of incident micro-optical elements 3a arranged on the first flat surface 5a of the carrier 5, preferably in an array A fixing step for fixing the incident optical element 3 including is shown, wherein the incident optical element 3 at least partially covers the first aperture device 8a, and light is transmitted through the incident optical element 3 It is arranged in such a way as to be able to enter at least partially into the carrier 5 through the first stop device 8a, and fix the incident optical element 3 on the first flat surface 5a of the carrier 5 Is performed by a light-transmitting adhesive. In Fig. 3(d), the state in which the incident optical element 3 is already fixedly connected with the carrier 5 is shown. Subsequently, according to step c), on the second flat surface 5b of the carrier 5 positioned opposite the first flat surface 5a-for example to prevent scattered light-a second aperture device is stacked The steps can be performed. Subsequently, the exit optical element 4 can be fixed on the opposite flat surface of the carrier 5.

In FIG. 4A, an exemplary configuration of the aperture devices 8a' positioned side by side according to the prior art is shown, and in FIG. 4B, the light distribution generated through the aperture devices is shown. Here, it can be confirmed that the point 50L is not dimmed.

In Fig. 5a, a schematic view of the configuration according to the invention of the iris devices 8a' and 8a", which are located next to each other, is shown, and the iris devices 8a" are light-shielding elements arranged to dimming an area around the measuring point 50L (A50L), and the light-blocking elements A50L of the individual aperture devices 8a" can be formed differently to produce a uniform luminance transition as much as possible. In FIG. 5B, the aperture devices according to FIG. 5A are included. The light distribution produced by the projection apparatus 1 is shown, through comparison with the light distribution according to Fig. 1, in particular the light distribution according to Fig. 5A although equally achieves dimming at the measuring point 50L. However, it is particularly evident that the transition to the surrounding environment is clearly more uniform.

In Fig. 6a, another schematic diagram of the configuration according to the present invention of the aperture devices 8a' and 8a" which are located next to each other is shown. Here, the aperture device 8a is now spaced apart from the aperture edge portion K ) Are provided with individual light-shielding elements (ASegm10) completely surrounded by the light-transmitting region of. These light blocking elements ASegm10 may be provided alone or in combination with the light blocking elements A50L in the second variant of the iris devices 8a". In the embodiment 6a, they are identical in other respects. Thus, apertures (not shown in the figures) that do not include light blocking elements are provided, that is, there are also apertures that do not include light blocking portions for segments 10 and 50 L. In general, the number and size of light blocking elements In addition, it is important that the geometric shape can also be selected according to the intended configuration of the light distribution to be generated.

In Fig. 6b, the light distribution produced by the projection device including the aperture devices according to Fig. 6a is shown. Here, beyond the shading of the measurement point 50L, further dimming was achieved within the segment 10 region of the light distribution, where uniform luminance transition was also provided.

In principle, reduction possibilities are arbitrarily provided on the array. Also, legal points may be variably formed. For the AFS function bad-weather light (class W), for example, the upper legal limit (eg for segment 10) is lower than for class C. In the case of 50L, the exact opposite can be applied. For bad weather light, the 50L can be clearly higher than in the case of grade C. Now, if intentionally placing only the segment 10 lines downstream of the collimator, the associated collimator can be further connected in case of bad weather, for this purpose the collimator which does not include the segment 10 lines in the case of corresponding systems can be disconnected. In doing so, the total luminous flux is maintained, but the segment 10 line is reduced in the overall light distribution. In the exact opposite way, it can generally be treated with 50 L measuring points.

In view of the teachings herein, one of ordinary skill in the art can reach other, not shown, embodiments of the invention, without assistance from the invention. Therefore, the present invention is not limited to the illustrated embodiments. Further, individual aspects of the present invention to embodiments may be selected and combined with each other. The essence here lies in the idea underlying the present invention, which can be practiced in a variety of ways through a person of ordinary skill in the art while knowing the specification of the present application and is nevertheless maintained by itself.

Claims (15)

As a projection apparatus 1 for an automobile headlamp, the projection apparatus 1 is at least one allocated to the projection apparatus 1 in the form of at least one light distribution in the front region of the vehicle, i.e., a low beam light distribution. It is configured to map the light of the light source, the projection device (1)
-An incident optical element (3), preferably comprising a total number of incident micro optical elements (3a) arranged in an array,
-Preferably comprising an emitting optical element 4 comprising a total number of emitting micro optical elements 4a arranged in the array,
Each incident micro-optical element 3a is assigned exactly one exiting micro-optical element 4a,
The incidence micro-optical elements 3a are formed in such a way that substantially the entire light emitted from one incident micro-optical element 3a is only incident into the assigned outgoing micro-optical element 4a, and/or the incident micro-optics The elements 3a and the emitting micro-optical elements 4a are arranged relative to each other, and
The light pre-formed by the incident micro-optical elements 3a is mapped by the exiting micro-optical elements 4a as at least one light distribution in the front area of the motor vehicle,
Each incident micro-optical element 3a converges light passing through it to at least one incident micro-optical element focus, wherein the incident micro-optical element focus is the incident micro-optical element 3a and the assigned outgoing micro-optical element 4a ), and at least one aperture device 8a', 8a" is disposed between the incident micro-optical element 3a and the exiting micro-optical element 4a,
Low-beam micro-optical systems are formed through at least the incident micro-optical elements 3a, the assigned outgoing micro-optical elements 4a and at least one aperture device 8a', 8a" positioned between these optical elements, respectively,
The at least one aperture device 8a', 8a" is configured such that the light distribution emitted through the exiting micro-optical element 4a forms a part of the low beam light distribution, so that each exiting micro-optical element 4a is The aperture device 8a', 8a" is configured to limit the distribution of light mapped through, for this purpose, at least one optically effective aperture edge portion K that maps the path of the light and dark boundary of the low beam light distribution. To include,
In the projection device for the vehicle headlamp,
The total number of low beam micro optics includes at least two groups of low beam micro optics, i.e.
-A first group of low beam micro optics, including at least one first variant of aperture devices 8a',
-A second group of low beam micro-optical systems comprising at least one second variant of the iris devices 8a", wherein the configuration of the second variant of the iris devices is:
At least, the second modification of the aperture devices
* Light blocking elements 50L projected along a section of the shape of the aperture edge portion K and/or
* From the aperture edge portion K, in that it comprises light blocking elements (ASegm 10) which are completely surrounded by the light transmissive region of the aperture device 8a", the aperture device 8a' 1 Projection device for automobile headlamps, which is different from the configuration of the modified example. The light beam element (A50L) according to claim 1, wherein each low beam micro-optical system including the aperture device (8a") of the second modification projects along a section of the shape of the aperture edge portion (K). ) Projection device (1) for a car headlamp comprising a. 3. The respective low-beam micro-optical system according to claim 1 or 2, comprising the aperture device (8a") of the second modification, is spaced apart from the aperture edge portion (K) and is completely by the light transmissive area of the aperture device. A projection device (1) for an automotive headlamp, characterized in that it comprises exactly one shading element which is enclosed. 4. Light according to any one of the preceding claims, wherein the at least one stop device (8a', 8a") is at least partially light transmissive on its surface to form a preset light distribution. Projection device (1) for an automobile headlamp, characterized in that it is connected to a light transmissive carrier (5) coated with a transmissive material. The projection for an automotive headlamp according to any one of claims 1 to 4, characterized in that at least the individual light blocking elements (A50L, ASegm10) of the aperture device (8a") of the second variant are partially light transmissive. Device (1). The projection for an automotive headlamp according to any one of claims 1 to 5, characterized in that at least the individual shading elements (A50L, ASegm10) of the aperture device (8a") of the second variant are completely light transmissive. Device (1). 7. The light-shielding element (A50L) according to any one of claims 1 to 6, characterized in that the individual light blocking elements (A50L) of the aperture device (8a") of the second variant are provided for limiting the light intensity of the light distribution at a 50L measuring point. Projection device for automobile headlamps (1). 8. The method according to claim 7, wherein the individual light-blocking elements (A50L) are arranged in such a way as to shield the area of the light distribution emitted through the respective low beam micro-optical system, wherein the area has a horizontal angle of up to 5° and a maximum of 5 Projection device (1) for a car headlamp, characterized in that it comprises a vertical angle of °. The size of at least one light blocking element (A50L, ASegm10) of the one side stop device (8a") of the second modification according to any one of claims 1 to 8, further stop device ( 8a") of at least one shading element (A50L, Asegm10) of the projection device for a headlamp, characterized in that different from the size. 10. The light-shielding element (A50L, ASegm10) of the aperture device (8a") of the second variant according to any one of claims 1 to 9, wherein the light intensity of the light distribution within segment 10 of the low beam light distribution is limited. Projection device for a vehicle headlamp, characterized in that provided for the (1). 11. The method of claim 10, The individual light-shielding elements (A50L, ASegm10) are arranged in such a way as to shield the region of the light distribution emitted through the respective low beam micro-optical system, the region having a horizontal angle of up to 10° Projection device (1) for a car headlamp, characterized in that it comprises a vertical angle of up to 3 °. 12. The carrier (5) according to any one of the preceding claims, wherein the carrier (5) of the at least one stop device (8a', 8a") is made of glass, preferably not only the incident optical element (3) The exit optical element 4 is also fixed to at least one carrier 5 of the aperture device 8a', 8a", which is disposed between the incident optical element 3 and the exit optical element 4 Connected, but preferably for at least one carrier (5) and the fixed connecting portion of the incident optical element (3) and the exit optical element (4), characterized in that each formed as a transparent adhesive joint for a headlamp for a vehicle Projection device (1). 13. The method according to any one of claims 1 to 12, wherein the total number of low beam micro optics comprises a third group of low beam micro optics comprising aperture devices of a third variant, wherein the third variant of For aperture devices,
* At least one light-transmitting window that is at least partially light-transmitting for forming a light distribution located above a light-dark boundary is formed inside the light-shielding region of the stop device formed up to the aperture edge portion K Projection device for automobile headlamps (1). A vehicle headlamp comprising at least one projection device (1) according to claim 1, and at least one light source (2) for inputting light into the projection device (1 ). Micro projection light module (6). A vehicle headlamp, in particular a motor vehicle headlamp, comprising at least one projection device according to claim 1 and/or at least one micro projection light module (6) according to claim 14.

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